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Summary of Material Accounting Policies - Summary of Subsidiaries (Parenthetical) (Detail) - PLDT Global Investments Holdings, Inc. [Member]
Jan. 05, 2024
shares
Disclosure of subsidiaries [line items]  
Number of shares issued 227
Top of range [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 45.73%
Bottom of range [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 50.72%